Human Eye and Colorful World

What are the main parts of the human eye?

• Eyelid, eyelash, eyebrow, tear duct, cheekbone

• Sclera, vitreous humor, fovea, ciliary body, aqueous humor

• Cornea, iris, pupil, lens, retina, optic nerve

• Nose, mouth, ear, chin, forehead

Explain the function of the cornea in the human eye.

• The cornea regulates the amount of light entering the eye

• The cornea is responsible for detecting color in the eye

• The cornea helps to focus light into the eye and plays a major role in vision.

• The cornea helps to produce tears in the eye

What is the role of the lens in the human eye?

• To produce tears

• To focus light onto the retina

• To regulate the amount of oxygen reaching the eye

• To absorb excess light

How does the iris control the amount of light entering the eye?

• By adjusting the size of the pupil

• By moving the lens closer to the retina

• By controlling the shape of the cornea

• By changing the color of the iris

What are the functions of the retina in the human eye?

• Regulate the amount of light entering the eye

• Produce tears to keep the eye moist

• Receive light and convert it into neural signals

• Help in focusing the light on the retina

What is myopia and how does it affect vision?

• Myopia has no effect on vision and is just a cosmetic issue.

• Myopia is a condition where both close and distant objects appear blurred, making it difficult to see anything clearly.

• Myopia is a condition where distant objects can be seen clearly, but close objects appear blurred. It is also known as farsightedness.

• Myopia is a condition where close objects can be seen clearly, but distant objects appear blurred. It is also known as nearsightedness.

Explain the condition of hyperopia and its impact on vision.

• Hyperopia causes difficulty in seeing distant objects clearly.

• Hyperopia causes color blindness.

• Hyperopia causes difficulty in seeing close objects clearly.

• Hyperopia causes no impact on vision.

What is astigmatism and how does it affect vision?

• Astigmatism causes color blindness

• Astigmatism causes blurred or distorted vision.

• Astigmatism has no effect on vision

• Astigmatism causes improved vision

Describe the process of image formation in the human eye.

• Light entering through the cornea, passing through the pupil, and being focused by the lens onto the retina.

• Light entering through the cornea, passing through the pupil, and being focused by the brain onto the retina.

• Sound entering through the cornea, passing through the pupil, and being focused by the lens onto the retina.

• Light entering through the ears, passing through the nose, and being focused by the mouth onto the retina.

How does the refraction of light occur in the human eye?

• Refraction of light in the human eye occurs when the light passes through the pupil and is absorbed by the iris

• Refraction of light in the human eye occurs when the eye absorbs the light and changes its color

• Refraction of light in the human eye occurs when the light is reflected off the surface of the eye

• Refraction of light in the human eye occurs when light passes through the cornea and lens, which bend or refract the light to focus it on the retina.